So I got the infinity's but there distorting?

I installed 2 pairs of infinity 652.5i 's into my jeep. The Rms on these things are 75 watts, Now when I turn it up 7/8th's of the loudest volume they sound like there distorting, and they dont sound that great at all. Now right now I'm using a BPV 655 Blaupunkt that puts out 26 watts RMS/55 watts max x 4 channels. So why am I getting a distorted sound?

Make the port as large and as round as possible. For example, a square port is more round than a rectangular one; an octogonal port is more round than a square port. Also, keep the number of ports down to one, if possible.

Re: So I got the infinity's but there distorting?

in my moms dakota if i play with the equilizer and turn the bass down to almost half i can usualy get it up to max volume and having no distorstion on it with the music i listen to, but if idf listen to rap i dont think i coould. its a stock infinity system